Home / 3,721.90-5,582.85-1,256.80

Finding the Fourth Proportional to 3,721.90, 5,582.85 and 1,256.80

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Solution

The fourth proportional to 3,721.90, 5,582.85 and 1,256.80 is: 1,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.90 : 5,582.85 = 1,256.80 : x
  2. Step 2: Convert to fraction form
    3,721.90/5,582.85 = 1,256.80/x
  3. Step 3: Cross multiply
    3,721.90x = 5,582.85 × 1,256.80
  4. Step 4: Simplify right side
    3,721.90x = 7,016,525.88
  5. Step 5: Solve for x
    x = 7,016,525.88/3,721.90
  6. Step 6: Final answer
    x = 1,885.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.